These salaries seem SUPER low.
Engineering manager with 15 years experience < 150k?
Try 200+k here in NYC.
(I guess both of our comments don't help a lot in general, except to show that you personally don't seem to consider an application at SO while I'd love to do just that)
Based on your assessment, I should expect to make a lot less in the future. But, yet people are contacting me weekly saying they can't fill positions at my salary level.
It seems like you're doing something wrong.